//  Stephen Smally © 2012
//      This program is free software; you can redistribute it and/or modify
//      it under the terms of the GNU General Public License as published by
//      the Free Software Foundation; either version 2 of the License, or
//      (at your option) any later version.
//
//      This program is distributed in the hope that it will be useful,
//      but WITHOUT ANY WARRANTY; without even the implied warranty of
//      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//      GNU General Public License for more details.
//
//      You should have received a copy of the GNU General Public License
//      along with this program; if not, write to the Free Software
//      Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
//      MA 02110-1301, USA.
//


using Pk;

namespace Lsc.Backend {
    public class AppsManager : Object {
        // Signals
        public signal void app_added (Package app);
        public signal void category_added (string category, string group);
        public signal void loading_started (string text);
        public signal void loading_finished ();
        public signal void details_received (Package pkg, Details details);

        // PackageKit stuffs
        private Client client;
        private Control control;
        private Cancellable transaction;

        // Vars
        public string[] icon_table;

        public static void get_pkgs_cb (Progress progress, ProgressType type) {
            if (type == ProgressType.PACKAGE_ID && progress.package != null) {
                stdout.printf("%s, %s\n", progress.package.get_name(), progress.package.get_arch());
                app_added(progress.package);
                while (Gtk.events_pending())spe
                    Gtk.main_iteration();
            }
        }

        public void ready () {
            loading_finished();
        }

        public void get_pkgs (string filters) {
            Bitfield filter;
            filter = filter_bitfield_from_string(filters);
            loading_started("Loading packages");
            client.get_packages_async(filter, null, (ProgressCallback) get_pkgs_cb, () => {ready();});
        }

        public void search_for_packages (string filters, string name) {
            Bitfield filter;
            filter = filter_bitfield_from_string(filters);
            loading_started("Loading packages");
            client.search_names_async(filter, {name}, null, (pkg) => {
                if (pkg.package != null) {
                    app_added(pkg.package);
                }
                while (Gtk.events_pending())
                    Gtk.main_iteration();
            }, () => {
                loading_finished();
            });
        }

        public void get_details (string pkg_id) {
            client.get_details_async({pkg_id},
            null,
            () => {},
            (obj, res) => {
                Results contains = client.generic_finish(res);
                details_received(get_package_from_id(pkg_id), contains.get_details_array()[0]);
            });
        }

        public Package get_package_from_id (string pkg_id) {
            Results res = client.resolve(filter_bitfield_from_string(""),
            {pkg_id},
            null,
            null);
            return res.get_package_array()[0];
        }

        private void fill_icon_table () {
            icon_table = {
                string.joinv("|", {group_enum_to_string(Group.UNKNOWN),"help-browser"}),    /* fall though value */
                string.joinv("|", {group_enum_to_string(Group.ACCESSIBILITY), "preferences-desktop-accessibility"}),
                string.joinv("|", {group_enum_to_string(Group.ACCESSORIES), "applications-accessories"}),
                string.joinv("|", {group_enum_to_string(Group.ADMIN_TOOLS), "system-lock-screen"}),
                string.joinv("|", {group_enum_to_string(Group.COLLECTIONS), "pk-collection-installed"}),
                string.joinv("|", {group_enum_to_string(Group.COMMUNICATION), "folder-remote"}),
                string.joinv("|", {group_enum_to_string(Group.DESKTOP_GNOME), "pk-desktop-gnome"}),
                string.joinv("|", {group_enum_to_string(Group.DESKTOP_KDE), "pk-desktop-kde"}),
                string.joinv("|", {group_enum_to_string(Group.DESKTOP_OTHER), "user-desktop"}),
                string.joinv("|", {group_enum_to_string(Group.DESKTOP_XFCE), "pk-desktop-xfce"}),
                string.joinv("|", {group_enum_to_string(Group.DOCUMENTATION), "x-office-address-book"}),
                string.joinv("|", {group_enum_to_string(Group.EDUCATION), "utilities-system-monitor"}),
                string.joinv("|", {group_enum_to_string(Group.ELECTRONICS), "video-display"}),
                string.joinv("|", {group_enum_to_string(Group.FONTS), "preferences-desktop-font"}),
                string.joinv("|", {group_enum_to_string(Group.GAMES), "applications-games"}),
                string.joinv("|", {group_enum_to_string(Group.GRAPHICS), "applications-graphics"}),
                string.joinv("|", {group_enum_to_string(Group.INTERNET), "applications-internet"}),
                string.joinv("|", {group_enum_to_string(Group.LEGACY), "media-floppy"}),
                string.joinv("|", {group_enum_to_string(Group.LOCALIZATION), "preferences-desktop-locale"}),
                string.joinv("|", {group_enum_to_string(Group.MAPS), "applications-multimedia"}),
                string.joinv("|", {group_enum_to_string(Group.MULTIMEDIA), "applications-multimedia"}),
                string.joinv("|", {group_enum_to_string(Group.NETWORK), "network-wired"}),
                string.joinv("|", {group_enum_to_string(Group.OFFICE), "applications-office"}),
                string.joinv("|", {group_enum_to_string(Group.OTHER), "applications-other"}),
                string.joinv("|", {group_enum_to_string(Group.POWER_MANAGEMENT), "battery"}),
                string.joinv("|", {group_enum_to_string(Group.PROGRAMMING), "applications-development"}),
                string.joinv("|", {group_enum_to_string(Group.PUBLISHING), "accessories-dictionary"}),
                string.joinv("|", {group_enum_to_string(Group.REPOS), "system-file-manager"}),
                string.joinv("|", {group_enum_to_string(Group.SCIENCE), "application-certificate"}),
                string.joinv("|", {group_enum_to_string(Group.SECURITY), "network-wireless-encrypted"}),
                string.joinv("|", {group_enum_to_string(Group.SERVERS), "network-server"}),
                string.joinv("|", {group_enum_to_string(Group.SYSTEM), "applications-system"}),
                string.joinv("|", {group_enum_to_string(Group.VIRTUALIZATION), "computer"}),
                string.joinv("|", {group_enum_to_string(Group.VENDOR), "application-certificate"}),
                string.joinv("|", {group_enum_to_string(Group.NEWEST), "dialog-information"})
            };
        }

        private string group_to_icon_name(string group) {
            foreach (string couple in icon_table) {
                if (couple.split("|")[0] == group) {
                return couple.split("|")[1];
                }
            }

            return "";
        }

        public void get_categories () {
            for (int i = 0; i < Group.LAST; i++) {
                if (i != Group.COLLECTIONS && i != Group.NEWEST)
                    category_added(group_to_icon_name(group_enum_to_string((Group)i)), group_enum_to_string((Group)i));
            }
        }

        public AppsManager () {
            client = new Client();
            control = new Control();
            transaction = new Cancellable();
            fill_icon_table();
        }
    }
}